TRICONEX DO2401信號處理模塊,DO2401使用配置說明
3504E型高密度
連續數字輸入模塊
驗證Tricon是否能夠DO2401
檢測到相反狀態的轉換。
在TMR模塊上，所有關鍵信號
路徑100%三倍于
保證安全和最大利用能力。每個通道條件信號
獨立于現場和
特里康。
3564型單數字輸入
模塊針對安全關鍵型進行了優化
成本更低的應用程序
比最大可用性更重要。
在單個模塊上，只有這些部分
所需的信號路徑的
確保安全操作三倍。
專用自檢電路檢測所有TRICONEX DO2401
卡滯接通和卡滯斷故障條件
不到半秒鐘。如果是單個
模塊檢測到輸入故障，并報告
該點為Off，這可能導致
切換到熱備盤期間出現故障
單元
The Model 3504E High-Density
Digital Input Module continuously
verifies the ability of the Tricon to
detect transitions to the opposite state.
On this TMR module, all critical signal
paths are 100 percent triplicated for
guaranteed safety and maximum avail
ability. Each channel conditions signals
independently between the field and the
Tricon.
The Model 3564 Single Digital Input
Module is optimized for safety-critical
applications where low cost is more
important than maximum availability.
On single modules, only those portions
of the signal path which are required to
ensure safe operation are triplicated.
Special self-test circuitry detects all
stuck-On and stuck-Off fault conditions
in less than half a second. If a single
module detects an input fault, it reports
that point as Off, which may cause a
glitch during switch-over to a hot-spare
module.
